The Japanese Trade Dollar was a dollar sized coin that was issued from 1875 to 1877. It was minted of 27.22 grams of .900 silver. The Yen coin of the time had 26.96 grams of silver and was otherwise nearly identical in design to the trade dollar. Nearly three million coins of this type were minted. When Japan introduced the gold standard in 1897, the silver one yen coins, including the trade dollars, were demonetized. The coins were then released for use in Taiwan, Korea and Southern Manchuria.